2560684909 has 8 divisors (see below), whose sum is σ = 2643949568. Its totient is φ = 2477461680.

The previous prime is 2560684883. The next prime is 2560684933. The reversal of 2560684909 is 9094860652.

2560684909 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2560684909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2560684939) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159979 + ... + 175255.

It is an arithmetic number, because the mean of its divisors is an integer number (330493696).

Almost surely, 2^2560684909 is an apocalyptic number.

It is an amenable number.

2560684909 is a deficient number, since it is larger than the sum of its proper divisors (83264659).

2560684909 is a wasteful number, since it uses less digits than its factorization.

2560684909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20715.

The product of its (nonzero) digits is 933120, while the sum is 49.

The square root of 2560684909 is about 50603.2104613927. The cubic root of 2560684909 is about 1368.1027441627.

The spelling of 2560684909 in words is "two billion, five hundred sixty million, six hundred eighty-four thousand, nine hundred nine".